| Using shipborne CTD, imported profiling buoy (APEX) and laboratory salinometer and other standard instruments, the on-site comparative testing is carried out in the northwestern Pacific Ocean on two models of domestic profiling buoys (COPEX and HM2000), and the quality of observation data is analyzed and evaluated in a qualitative and quantitative manner. The results indicate that (1) the salinity data observed by the COPEX and HM2000 buoys can meet the accuracy requirement put forward by the International Argo Plan (±0.01); (2) for HM2000, the minimum observing depth is between 0 and 1 dbar, and the maximum observing depth stays at 2000 dbar, with the drifting depth of about 1000 dbar; for COPEX, in contrast, the minimum observing depth is between 8 and 9 dbar, the maximum observing depth fluctuates between 1800 and 1900 dbar, with the drifting depth between 600 and 800 dbar; (3) both COPEX and HM2000 can get more than 70 effective observing profiles. In general, the temperature and salinity data of the two kinds of domestic profiling buoys are both believable and reliable. However, the problems exposed in the testing remain to be tackled through continued improvement. |
